ARP Odyssey Mk III Model 2820

Mark III was produced between 1978 and 1981, and was the last model until Korg's revival of the Odyssey in 2015. Mark III's are also the most common models of the Odyssey. The Mark III used ARP's four-pole 4057 filter and introduced proportional pitch control (PPC). PPC was a pitch bend system created by ARP that used pressure-sensitive buttons to control bend up, bend down, and vibrato. Older models had used a standard knob. Apart from the new filter and pitch bend, the distinguishing feature of the Mark III is its orange and black color scheme, which was consistent with other contemporary ARP instruments.